./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/sina2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/sina2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ea1eb4a8af9eb0da04a9f2b25d1b98ecd98ff3b6d87ba0d8e53000f12b8adcc --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 10:13:42,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:13:42,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:13:42,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:13:42,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:13:42,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:13:42,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:13:42,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:13:42,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:13:42,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:13:42,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:13:42,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:13:42,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:13:42,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:13:42,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:13:42,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:13:42,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:13:42,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:13:42,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:13:42,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:13:42,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:13:42,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:13:42,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:13:42,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:13:42,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:13:42,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:13:42,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:13:42,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:13:42,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:13:42,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:13:42,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:13:42,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:13:42,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:13:42,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:13:42,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:13:42,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:13:42,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:13:42,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:13:42,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:13:42,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:13:42,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:13:42,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:13:42,278 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:13:42,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:13:42,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:13:42,281 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:13:42,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:13:42,282 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:13:42,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:13:42,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:13:42,283 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:13:42,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:13:42,284 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:13:42,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:13:42,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:13:42,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:13:42,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:13:42,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:13:42,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:13:42,285 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:13:42,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:13:42,286 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:13:42,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:13:42,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:13:42,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:13:42,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:13:42,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:13:42,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:13:42,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:13:42,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:13:42,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:13:42,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:13:42,288 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:13:42,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:13:42,288 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:13:42,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:13:42,289 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:13:42,289 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ea1eb4a8af9eb0da04a9f2b25d1b98ecd98ff3b6d87ba0d8e53000f12b8adcc [2023-02-15 10:13:42,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:13:42,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:13:42,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:13:42,575 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:13:42,576 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:13:42,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sina2.c [2023-02-15 10:13:43,692 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:13:43,833 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:13:43,834 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina2.c [2023-02-15 10:13:43,842 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/511506e47/260308587802476d93e96d360062b0b0/FLAGfd99032f7 [2023-02-15 10:13:43,854 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/511506e47/260308587802476d93e96d360062b0b0 [2023-02-15 10:13:43,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:13:43,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:13:43,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:13:43,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:13:43,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:13:43,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:13:43" (1/1) ... [2023-02-15 10:13:43,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a89b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:43, skipping insertion in model container [2023-02-15 10:13:43,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:13:43" (1/1) ... [2023-02-15 10:13:43,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:13:43,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:13:43,980 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina2.c[588,601] [2023-02-15 10:13:43,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:13:44,002 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:13:44,015 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina2.c[588,601] [2023-02-15 10:13:44,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:13:44,032 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:13:44,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:44 WrapperNode [2023-02-15 10:13:44,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:13:44,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:13:44,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:13:44,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:13:44,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:44" (1/1) ... [2023-02-15 10:13:44,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:44" (1/1) ... [2023-02-15 10:13:44,069 INFO L138 Inliner]: procedures = 17, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2023-02-15 10:13:44,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:13:44,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:13:44,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:13:44,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:13:44,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:44" (1/1) ... [2023-02-15 10:13:44,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:44" (1/1) ... [2023-02-15 10:13:44,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:44" (1/1) ... [2023-02-15 10:13:44,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:44" (1/1) ... [2023-02-15 10:13:44,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:44" (1/1) ... [2023-02-15 10:13:44,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:44" (1/1) ... [2023-02-15 10:13:44,088 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:44" (1/1) ... [2023-02-15 10:13:44,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:44" (1/1) ... [2023-02-15 10:13:44,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:13:44,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:13:44,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:13:44,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:13:44,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:44" (1/1) ... [2023-02-15 10:13:44,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:13:44,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:13:44,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 10:13:44,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 10:13:44,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:13:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:13:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 10:13:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 10:13:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 10:13:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:13:44,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:13:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 10:13:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 10:13:44,237 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:13:44,241 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:13:44,515 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:13:44,523 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:13:44,524 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 10:13:44,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:13:44 BoogieIcfgContainer [2023-02-15 10:13:44,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:13:44,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:13:44,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:13:44,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:13:44,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:13:43" (1/3) ... [2023-02-15 10:13:44,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cee7ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:13:44, skipping insertion in model container [2023-02-15 10:13:44,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:13:44" (2/3) ... [2023-02-15 10:13:44,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cee7ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:13:44, skipping insertion in model container [2023-02-15 10:13:44,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:13:44" (3/3) ... [2023-02-15 10:13:44,562 INFO L112 eAbstractionObserver]: Analyzing ICFG sina2.c [2023-02-15 10:13:44,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:13:44,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 10:13:44,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:13:44,626 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@76ebe18a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:13:44,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 10:13:44,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:13:44,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 10:13:44,634 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:13:44,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:13:44,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:13:44,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:13:44,639 INFO L85 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2023-02-15 10:13:44,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:13:44,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938706689] [2023-02-15 10:13:44,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:13:44,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:13:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:13:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:13:44,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:13:44,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938706689] [2023-02-15 10:13:44,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938706689] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:13:44,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:13:44,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 10:13:44,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867700002] [2023-02-15 10:13:44,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:13:44,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 10:13:44,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:13:44,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 10:13:44,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:13:44,814 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:13:44,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:13:44,828 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2023-02-15 10:13:44,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 10:13:44,829 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 10:13:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:13:44,835 INFO L225 Difference]: With dead ends: 44 [2023-02-15 10:13:44,836 INFO L226 Difference]: Without dead ends: 20 [2023-02-15 10:13:44,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:13:44,846 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:13:44,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:13:44,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-15 10:13:44,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-15 10:13:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:13:44,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-15 10:13:44,878 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2023-02-15 10:13:44,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:13:44,878 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-15 10:13:44,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:13:44,879 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-02-15 10:13:44,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 10:13:44,879 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:13:44,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:13:44,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 10:13:44,880 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:13:44,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:13:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2023-02-15 10:13:44,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:13:44,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849011759] [2023-02-15 10:13:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:13:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:13:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:13:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:13:45,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:13:45,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849011759] [2023-02-15 10:13:45,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849011759] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:13:45,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:13:45,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:13:45,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660653679] [2023-02-15 10:13:45,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:13:45,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:13:45,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:13:45,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:13:45,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:13:45,122 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:13:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:13:45,185 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2023-02-15 10:13:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 10:13:45,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 10:13:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:13:45,187 INFO L225 Difference]: With dead ends: 45 [2023-02-15 10:13:45,187 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 10:13:45,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:13:45,194 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:13:45,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 16 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:13:45,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 10:13:45,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2023-02-15 10:13:45,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:13:45,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-15 10:13:45,208 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2023-02-15 10:13:45,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:13:45,209 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-15 10:13:45,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:13:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-15 10:13:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 10:13:45,211 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:13:45,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:13:45,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 10:13:45,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:13:45,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:13:45,214 INFO L85 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2023-02-15 10:13:45,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:13:45,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764171859] [2023-02-15 10:13:45,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:13:45,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:13:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:13:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:13:46,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:13:46,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764171859] [2023-02-15 10:13:46,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764171859] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:13:46,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5294653] [2023-02-15 10:13:46,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:13:46,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:13:46,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:13:46,429 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:13:46,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 10:13:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:13:46,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-15 10:13:46,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:13:46,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 10:13:46,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 10:13:46,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 10:13:46,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2023-02-15 10:13:46,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2023-02-15 10:13:47,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2023-02-15 10:13:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:13:47,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:13:47,456 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:13:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:13:47,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5294653] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:13:47,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:13:47,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 34 [2023-02-15 10:13:47,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766794437] [2023-02-15 10:13:47,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:13:47,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-02-15 10:13:47,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:13:47,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-02-15 10:13:47,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2023-02-15 10:13:47,496 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:13:48,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:13:48,969 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2023-02-15 10:13:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 10:13:48,970 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 10:13:48,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:13:48,971 INFO L225 Difference]: With dead ends: 56 [2023-02-15 10:13:48,971 INFO L226 Difference]: Without dead ends: 54 [2023-02-15 10:13:48,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=485, Invalid=2485, Unknown=0, NotChecked=0, Total=2970 [2023-02-15 10:13:48,973 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 147 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 10:13:48,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 130 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 10:13:48,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-15 10:13:48,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2023-02-15 10:13:48,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:13:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2023-02-15 10:13:48,984 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 20 [2023-02-15 10:13:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:13:48,984 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2023-02-15 10:13:48,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:13:48,985 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2023-02-15 10:13:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 10:13:48,985 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:13:48,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:13:48,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 10:13:49,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:13:49,189 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:13:49,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:13:49,190 INFO L85 PathProgramCache]: Analyzing trace with hash 952727132, now seen corresponding path program 2 times [2023-02-15 10:13:49,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:13:49,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375413868] [2023-02-15 10:13:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:13:49,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:13:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:13:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:13:49,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:13:49,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375413868] [2023-02-15 10:13:49,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375413868] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:13:49,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95799936] [2023-02-15 10:13:49,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 10:13:49,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:13:49,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:13:49,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:13:49,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 10:13:49,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 10:13:49,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:13:49,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 10:13:49,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:13:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:13:49,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:13:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:13:49,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95799936] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:13:49,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:13:49,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-02-15 10:13:49,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878341311] [2023-02-15 10:13:49,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:13:49,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 10:13:49,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:13:49,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 10:13:49,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-02-15 10:13:49,440 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:13:49,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:13:49,683 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2023-02-15 10:13:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 10:13:49,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-15 10:13:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:13:49,686 INFO L225 Difference]: With dead ends: 76 [2023-02-15 10:13:49,687 INFO L226 Difference]: Without dead ends: 44 [2023-02-15 10:13:49,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2023-02-15 10:13:49,690 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 113 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:13:49,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 88 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:13:49,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-15 10:13:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 29. [2023-02-15 10:13:49,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:13:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-02-15 10:13:49,702 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2023-02-15 10:13:49,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:13:49,702 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-02-15 10:13:49,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:13:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-02-15 10:13:49,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 10:13:49,707 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:13:49,707 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:13:49,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 10:13:49,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-15 10:13:49,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:13:49,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:13:49,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1304966232, now seen corresponding path program 3 times [2023-02-15 10:13:49,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:13:49,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751390087] [2023-02-15 10:13:49,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:13:49,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:13:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:13:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:13:51,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:13:51,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751390087] [2023-02-15 10:13:51,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751390087] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:13:51,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112700844] [2023-02-15 10:13:51,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 10:13:51,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:13:51,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:13:51,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:13:51,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 10:13:51,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 10:13:51,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:13:51,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 62 conjunts are in the unsatisfiable core [2023-02-15 10:13:51,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:13:51,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 10:13:51,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:13:51,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 10:13:51,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:13:51,754 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2023-02-15 10:13:51,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-02-15 10:13:52,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:13:52,019 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:13:52,023 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:13:52,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 41 [2023-02-15 10:13:52,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:13:52,174 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-02-15 10:13:52,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 48 [2023-02-15 10:13:52,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:13:52,569 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:13:52,605 INFO L321 Elim1Store]: treesize reduction 68, result has 42.9 percent of original size [2023-02-15 10:13:52,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 65 treesize of output 82 [2023-02-15 10:13:53,160 INFO L321 Elim1Store]: treesize reduction 207, result has 33.0 percent of original size [2023-02-15 10:13:53,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 121 treesize of output 180 [2023-02-15 10:13:55,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:13:55,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2023-02-15 10:13:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:13:55,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:13:59,402 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:13:59,403 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:13:59,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:13:59,409 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 10:13:59,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 1 [2023-02-15 10:13:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:13:59,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112700844] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:13:59,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:13:59,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 22] total 61 [2023-02-15 10:13:59,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117319992] [2023-02-15 10:13:59,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:13:59,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-02-15 10:13:59,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:13:59,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-02-15 10:13:59,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=3241, Unknown=1, NotChecked=0, Total=3660 [2023-02-15 10:13:59,416 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 61 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:14:26,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:14:26,190 INFO L93 Difference]: Finished difference Result 157 states and 174 transitions. [2023-02-15 10:14:26,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-02-15 10:14:26,191 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-15 10:14:26,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:14:26,193 INFO L225 Difference]: With dead ends: 157 [2023-02-15 10:14:26,193 INFO L226 Difference]: Without dead ends: 155 [2023-02-15 10:14:26,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6619 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=2670, Invalid=19979, Unknown=1, NotChecked=0, Total=22650 [2023-02-15 10:14:26,202 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 696 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:14:26,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 297 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-15 10:14:26,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-15 10:14:26,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 66. [2023-02-15 10:14:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2) internal successors, (78), 65 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:14:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2023-02-15 10:14:26,220 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 26 [2023-02-15 10:14:26,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:14:26,220 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2023-02-15 10:14:26,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:14:26,221 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2023-02-15 10:14:26,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 10:14:26,221 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:14:26,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:14:26,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 10:14:26,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:14:26,428 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:14:26,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:14:26,428 INFO L85 PathProgramCache]: Analyzing trace with hash 341343694, now seen corresponding path program 1 times [2023-02-15 10:14:26,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:14:26,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976593845] [2023-02-15 10:14:26,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:14:26,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:14:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:14:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:14:27,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:14:27,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976593845] [2023-02-15 10:14:27,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976593845] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:14:27,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289477237] [2023-02-15 10:14:27,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:14:27,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:14:27,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:14:27,921 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:14:27,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 10:14:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:14:27,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-15 10:14:27,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:14:28,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-15 10:14:28,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 10:14:28,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 10:14:28,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:28,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-02-15 10:14:28,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:28,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2023-02-15 10:14:28,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:28,424 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:14:28,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2023-02-15 10:14:28,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:28,541 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:14:28,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2023-02-15 10:14:28,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2023-02-15 10:14:28,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 27 [2023-02-15 10:14:28,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:14:28,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:14:30,263 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:14:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:14:30,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289477237] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:14:30,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:14:30,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 19] total 53 [2023-02-15 10:14:30,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973944890] [2023-02-15 10:14:30,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:14:30,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-02-15 10:14:30,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:14:30,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-02-15 10:14:30,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2473, Unknown=0, NotChecked=0, Total=2756 [2023-02-15 10:14:30,273 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 53 states, 53 states have (on average 1.509433962264151) internal successors, (80), 53 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:14:41,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:14:41,873 INFO L93 Difference]: Finished difference Result 152 states and 171 transitions. [2023-02-15 10:14:41,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-02-15 10:14:41,873 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.509433962264151) internal successors, (80), 53 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 10:14:41,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:14:41,874 INFO L225 Difference]: With dead ends: 152 [2023-02-15 10:14:41,874 INFO L226 Difference]: Without dead ends: 143 [2023-02-15 10:14:41,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4152 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1415, Invalid=11925, Unknown=0, NotChecked=0, Total=13340 [2023-02-15 10:14:41,877 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 323 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-02-15 10:14:41,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 302 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-02-15 10:14:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-02-15 10:14:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 88. [2023-02-15 10:14:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.206896551724138) internal successors, (105), 87 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:14:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 105 transitions. [2023-02-15 10:14:41,901 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 105 transitions. Word has length 30 [2023-02-15 10:14:41,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:14:41,901 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 105 transitions. [2023-02-15 10:14:41,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.509433962264151) internal successors, (80), 53 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:14:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 105 transitions. [2023-02-15 10:14:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 10:14:41,903 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:14:41,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:14:41,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 10:14:42,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:14:42,109 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:14:42,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:14:42,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1941187564, now seen corresponding path program 4 times [2023-02-15 10:14:42,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:14:42,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441235225] [2023-02-15 10:14:42,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:14:42,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:14:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:14:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 10:14:42,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:14:42,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441235225] [2023-02-15 10:14:42,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441235225] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:14:42,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053739467] [2023-02-15 10:14:42,193 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 10:14:42,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:14:42,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:14:42,197 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:14:42,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 10:14:42,273 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 10:14:42,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:14:42,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 10:14:42,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:14:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 10:14:42,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:14:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 10:14:42,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053739467] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:14:42,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:14:42,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-02-15 10:14:42,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530744943] [2023-02-15 10:14:42,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:14:42,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 10:14:42,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:14:42,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 10:14:42,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-02-15 10:14:42,378 INFO L87 Difference]: Start difference. First operand 88 states and 105 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:14:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:14:42,549 INFO L93 Difference]: Finished difference Result 157 states and 179 transitions. [2023-02-15 10:14:42,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 10:14:42,549 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 10:14:42,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:14:42,550 INFO L225 Difference]: With dead ends: 157 [2023-02-15 10:14:42,550 INFO L226 Difference]: Without dead ends: 94 [2023-02-15 10:14:42,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-02-15 10:14:42,552 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 90 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:14:42,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 65 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:14:42,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-15 10:14:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 69. [2023-02-15 10:14:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.161764705882353) internal successors, (79), 68 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:14:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2023-02-15 10:14:42,579 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 30 [2023-02-15 10:14:42,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:14:42,580 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2023-02-15 10:14:42,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:14:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2023-02-15 10:14:42,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 10:14:42,583 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:14:42,583 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:14:42,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 10:14:42,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:14:42,790 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:14:42,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:14:42,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1672696980, now seen corresponding path program 5 times [2023-02-15 10:14:42,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:14:42,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58397056] [2023-02-15 10:14:42,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:14:42,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:14:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:14:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 10:14:42,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:14:42,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58397056] [2023-02-15 10:14:42,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58397056] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:14:42,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596919359] [2023-02-15 10:14:42,875 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 10:14:42,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:14:42,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:14:42,877 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:14:42,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 10:14:42,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-02-15 10:14:42,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:14:42,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 10:14:42,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:14:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 10:14:43,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:14:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 10:14:43,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596919359] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:14:43,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:14:43,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-02-15 10:14:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191200934] [2023-02-15 10:14:43,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:14:43,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 10:14:43,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:14:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 10:14:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-02-15 10:14:43,073 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:14:43,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:14:43,213 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2023-02-15 10:14:43,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 10:14:43,213 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 10:14:43,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:14:43,214 INFO L225 Difference]: With dead ends: 91 [2023-02-15 10:14:43,214 INFO L226 Difference]: Without dead ends: 67 [2023-02-15 10:14:43,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-02-15 10:14:43,215 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 111 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:14:43,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 64 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:14:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-15 10:14:43,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 35. [2023-02-15 10:14:43,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:14:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-02-15 10:14:43,225 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 30 [2023-02-15 10:14:43,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:14:43,225 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-02-15 10:14:43,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:14:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-02-15 10:14:43,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 10:14:43,227 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:14:43,227 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:14:43,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 10:14:43,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:14:43,433 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:14:43,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:14:43,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1505554158, now seen corresponding path program 6 times [2023-02-15 10:14:43,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:14:43,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612798270] [2023-02-15 10:14:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:14:43,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:14:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:14:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:14:45,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:14:45,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612798270] [2023-02-15 10:14:45,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612798270] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:14:45,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644067719] [2023-02-15 10:14:45,345 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 10:14:45,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:14:45,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:14:45,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:14:45,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 10:14:45,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-02-15 10:14:45,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:14:45,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 77 conjunts are in the unsatisfiable core [2023-02-15 10:14:45,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:14:45,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 10:14:45,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:45,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 10:14:45,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:45,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:45,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-02-15 10:14:45,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:45,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:45,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:45,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2023-02-15 10:14:46,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 47 [2023-02-15 10:14:46,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,128 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-02-15 10:14:46,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 58 [2023-02-15 10:14:46,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,261 INFO L321 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2023-02-15 10:14:46,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 72 [2023-02-15 10:14:46,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,564 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:14:46,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,565 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:14:46,566 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:14:46,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 59 [2023-02-15 10:14:46,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,746 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:14:46,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 53 [2023-02-15 10:14:46,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:46,899 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:14:46,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-02-15 10:14:47,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:47,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 27 [2023-02-15 10:14:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:14:47,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:14:49,539 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:14:49,540 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:14:49,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:49,542 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:14:49,543 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:14:49,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:14:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:14:49,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644067719] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:14:49,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:14:49,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 25] total 72 [2023-02-15 10:14:49,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369208163] [2023-02-15 10:14:49,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:14:49,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-02-15 10:14:49,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:14:49,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-02-15 10:14:49,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=4635, Unknown=0, NotChecked=0, Total=5112 [2023-02-15 10:14:49,552 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 72 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 72 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:16:12,930 INFO L93 Difference]: Finished difference Result 207 states and 223 transitions. [2023-02-15 10:16:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-02-15 10:16:12,931 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 72 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-15 10:16:12,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:16:12,931 INFO L225 Difference]: With dead ends: 207 [2023-02-15 10:16:12,931 INFO L226 Difference]: Without dead ends: 205 [2023-02-15 10:16:12,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10327 ImplicationChecksByTransitivity, 83.4s TimeCoverageRelationStatistics Valid=3303, Invalid=29277, Unknown=0, NotChecked=0, Total=32580 [2023-02-15 10:16:12,935 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 876 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-02-15 10:16:12,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 531 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-02-15 10:16:12,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-02-15 10:16:12,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 62. [2023-02-15 10:16:12,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 61 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:12,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2023-02-15 10:16:12,953 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 32 [2023-02-15 10:16:12,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:16:12,954 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2023-02-15 10:16:12,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 72 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:12,954 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2023-02-15 10:16:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-15 10:16:12,955 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:12,955 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:12,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-15 10:16:13,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:13,162 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:13,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash 526321296, now seen corresponding path program 7 times [2023-02-15 10:16:13,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:13,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892038820] [2023-02-15 10:16:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:13,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:16:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 10:16:13,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:13,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892038820] [2023-02-15 10:16:13,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892038820] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:16:13,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851178860] [2023-02-15 10:16:13,283 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 10:16:13,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:13,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:13,285 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:16:13,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 10:16:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:16:13,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 10:16:13,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 10:16:13,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:16:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 10:16:13,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851178860] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:16:13,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:16:13,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-02-15 10:16:13,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836054617] [2023-02-15 10:16:13,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:16:13,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 10:16:13,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 10:16:13,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-02-15 10:16:13,522 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:13,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:16:13,882 INFO L93 Difference]: Finished difference Result 137 states and 150 transitions. [2023-02-15 10:16:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 10:16:13,882 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-02-15 10:16:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:16:13,885 INFO L225 Difference]: With dead ends: 137 [2023-02-15 10:16:13,885 INFO L226 Difference]: Without dead ends: 119 [2023-02-15 10:16:13,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2023-02-15 10:16:13,886 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 107 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:16:13,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 206 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 10:16:13,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-02-15 10:16:13,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 74. [2023-02-15 10:16:13,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:13,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2023-02-15 10:16:13,910 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 34 [2023-02-15 10:16:13,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:16:13,910 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2023-02-15 10:16:13,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:16:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2023-02-15 10:16:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 10:16:13,913 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:16:13,913 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:16:13,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 10:16:14,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 10:16:14,120 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:16:14,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:16:14,120 INFO L85 PathProgramCache]: Analyzing trace with hash -968725112, now seen corresponding path program 2 times [2023-02-15 10:16:14,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:16:14,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593763340] [2023-02-15 10:16:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:16:14,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:16:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:16:16,402 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:16,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:16:16,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593763340] [2023-02-15 10:16:16,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593763340] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:16:16,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588228518] [2023-02-15 10:16:16,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 10:16:16,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:16:16,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:16:16,403 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:16:16,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 10:16:16,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 10:16:16,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:16:16,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 78 conjunts are in the unsatisfiable core [2023-02-15 10:16:16,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:16:16,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 10:16:16,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:16,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 10:16:16,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:16,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:16,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-02-15 10:16:16,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:16,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:16,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:16,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:16,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-02-15 10:16:17,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,038 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:16:17,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2023-02-15 10:16:17,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,166 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:16:17,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2023-02-15 10:16:17,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 51 [2023-02-15 10:16:17,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,503 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:16:17,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 54 [2023-02-15 10:16:17,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,625 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:16:17,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2023-02-15 10:16:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:17,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 37 [2023-02-15 10:16:18,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:16:18,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2023-02-15 10:16:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:18,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:16:21,200 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:16:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:16:21,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588228518] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:16:21,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:16:21,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 25] total 73 [2023-02-15 10:16:21,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206924928] [2023-02-15 10:16:21,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:16:21,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-02-15 10:16:21,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:16:21,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-02-15 10:16:21,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=4788, Unknown=0, NotChecked=0, Total=5256 [2023-02-15 10:16:21,209 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 73 states, 73 states have (on average 1.356164383561644) internal successors, (99), 73 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:17:06,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:17:06,185 INFO L93 Difference]: Finished difference Result 229 states and 248 transitions. [2023-02-15 10:17:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-02-15 10:17:06,186 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.356164383561644) internal successors, (99), 73 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-15 10:17:06,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:17:06,186 INFO L225 Difference]: With dead ends: 229 [2023-02-15 10:17:06,186 INFO L226 Difference]: Without dead ends: 205 [2023-02-15 10:17:06,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10664 ImplicationChecksByTransitivity, 45.9s TimeCoverageRelationStatistics Valid=2915, Invalid=29305, Unknown=0, NotChecked=0, Total=32220 [2023-02-15 10:17:06,189 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 578 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-02-15 10:17:06,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 569 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-02-15 10:17:06,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-02-15 10:17:06,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 87. [2023-02-15 10:17:06,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 86 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:17:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2023-02-15 10:17:06,217 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 36 [2023-02-15 10:17:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:17:06,217 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2023-02-15 10:17:06,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.356164383561644) internal successors, (99), 73 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:17:06,218 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2023-02-15 10:17:06,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 10:17:06,218 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:17:06,218 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:17:06,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 10:17:06,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:17:06,424 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:17:06,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:17:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1060821388, now seen corresponding path program 8 times [2023-02-15 10:17:06,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:17:06,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251997561] [2023-02-15 10:17:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:17:06,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:17:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:17:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 10:17:06,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:17:06,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251997561] [2023-02-15 10:17:06,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251997561] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:17:06,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829005114] [2023-02-15 10:17:06,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 10:17:06,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:17:06,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:17:06,589 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:17:06,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 10:17:06,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 10:17:06,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:17:06,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 10:17:06,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:17:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 10:17:06,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:17:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 10:17:06,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829005114] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:17:06,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:17:06,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 19 [2023-02-15 10:17:06,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769886176] [2023-02-15 10:17:06,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:17:06,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 10:17:06,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:17:06,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 10:17:06,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2023-02-15 10:17:06,847 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:17:07,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:17:07,070 INFO L93 Difference]: Finished difference Result 149 states and 163 transitions. [2023-02-15 10:17:07,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 10:17:07,070 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-15 10:17:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:17:07,071 INFO L225 Difference]: With dead ends: 149 [2023-02-15 10:17:07,071 INFO L226 Difference]: Without dead ends: 97 [2023-02-15 10:17:07,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2023-02-15 10:17:07,072 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 100 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:17:07,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 91 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 10:17:07,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-15 10:17:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 68. [2023-02-15 10:17:07,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:17:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2023-02-15 10:17:07,092 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 38 [2023-02-15 10:17:07,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:17:07,092 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2023-02-15 10:17:07,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:17:07,092 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2023-02-15 10:17:07,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 10:17:07,093 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:17:07,093 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:17:07,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 10:17:07,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-15 10:17:07,294 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:17:07,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:17:07,294 INFO L85 PathProgramCache]: Analyzing trace with hash -389301684, now seen corresponding path program 9 times [2023-02-15 10:17:07,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:17:07,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373353725] [2023-02-15 10:17:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:17:07,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:17:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:17:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:17:09,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:17:09,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373353725] [2023-02-15 10:17:09,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373353725] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:17:09,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589279349] [2023-02-15 10:17:09,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 10:17:09,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:17:09,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:17:09,876 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:17:09,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 10:17:09,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-15 10:17:09,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:17:09,999 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 92 conjunts are in the unsatisfiable core [2023-02-15 10:17:10,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:17:10,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 10:17:10,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:10,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-15 10:17:10,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:10,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:10,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-02-15 10:17:10,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:10,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:10,302 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2023-02-15 10:17:10,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 44 [2023-02-15 10:17:10,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:10,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:10,460 INFO L321 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2023-02-15 10:17:10,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 59 [2023-02-15 10:17:10,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:10,818 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:17:10,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:10,834 INFO L321 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2023-02-15 10:17:10,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 68 [2023-02-15 10:17:11,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,040 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:17:11,046 INFO L321 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-02-15 10:17:11,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 77 treesize of output 71 [2023-02-15 10:17:11,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,280 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2023-02-15 10:17:11,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 85 [2023-02-15 10:17:11,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,522 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-02-15 10:17:11,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 87 [2023-02-15 10:17:11,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,991 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:17:11,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,995 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:17:11,996 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:17:11,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:11,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 71 [2023-02-15 10:17:12,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:12,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:12,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:12,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:12,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:12,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:12,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:12,271 INFO L321 Elim1Store]: treesize reduction 59, result has 49.1 percent of original size [2023-02-15 10:17:12,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 103 [2023-02-15 10:17:12,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:12,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:17:12,712 INFO L321 Elim1Store]: treesize reduction 116, result has 68.9 percent of original size [2023-02-15 10:17:12,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 122 treesize of output 327